Finding the Fourth Proportional to 830,010.48, 1,245,404.52 and 409,056.72

Step by Step Solution

1. Step 1: Write the proportion equation
   830,010.48 : 1,245,404.52 = 409,056.72 : x
2. Step 2: Convert to fraction form
   830,010.48/1,245,404.52 = 409,056.72/x
3. Step 3: Cross multiply
   830,010.48x = 1,245,404.52 × 409,056.72
4. Step 4: Simplify right side
   830,010.48x = 509,441,088,024.37
5. Step 5: Solve for x
   x = 509,441,088,024.37/830,010.48
6. Step 6: Final answer
   x = 613,776.69